TallGuyCA wrote:

> Hi,
>
> I am new to this group and this question may have been asked before.
>
> in heavy stop and go traffic the water temperature goes way up at 80% and
> then the fan engages and cools it down to 50% levels. In normal driving it
> is stable at 30% of the gage.
>
> This has been happening for couple of years and I am wondering what could be
> wrong. In the past the hottest the engine got was at the 50%. My mechanic
> friend said that it is the fan switch. I had it replaced and the problem
> persists.
>
> Is there a thermostat that needs to be replaced? Could it be a sensor
> somewhere else that is broken? I just replaced the vacuum next to the
> distributor and oxygen sensor during a smog check.
>
> The car has 190,000 miles on the odometer and I have been the sole owner of
> the car.
>
> Thanks for your help in advance.
>
>

You're the same guy I just posted to in the Honda group. I think I gave
you some good advice on your *Prelude*, have you tried any of it?

Your entire cooling system has almost 200k miles on it. Quit
(Cross)posting and start turning wrenches.